Membership in the credit union is voluntary and is open to all citizens bound by with joint work or residence, who wished to create a credit union to use its services and are willing to take on relevant commitments and responsibilities. First central bank of credit unions appeared in 1876. Credit unions began to appear rapidly in many European countries. All the members of the credit union, regardless of gender, ethnicity, religious and political beliefs, as well as the size of the monetary share have equal rights. Until the 70's there was a proliferation of the U.S. credit unions due to the increase of their number and the number of shareholders, although it must be acknowledged that there was also and a qualitative growth. The relationship of shareholders with credit union are not client-based, they are co-operative, based on different principles and standards, in particular, on the principles of the law of obligations. In some cases, the initiators of credit unions can be trade unions, associations such as social support centers and others. Credit unions, like today's credit unions, emerged in the 19th century in Germany as a result of crop failure and famine. Credit Union - a non-profit financial institution specialized in mutual financial assistance by providing savings and credit services to their members.